To affect a random subset of your rows, update where random() < 0.3 for example

We then decided it would be useful to have a sample database available for public consumption. There is already one example database available at github.com/pgexperts/librec, but we wanted one that implemented a lot more PostgreSQL features and had lots of random data in it. We could make one that would be used to store data about PGCon.

Lastly, we also discussed the desire for an extension for plotting and graphing data visually called e.g. pg_graph. One example function it might provide is something to plot x,y points using ascii art.